My personal recommendation is that the mainboard and CPU are right on the money. 990FX boards are the last, final and best ones before they change the architecture while the CPU option is the best mainstream one money can buy, unless your ego can match your wallet then the FX9590 is your poison. For just a few more $$$, these options removes any desire and sensibility for future upgrades. AMD chips gets notoriously expensive when they get rare. Your mainboard would have 4 RAM slots so do get 2X 8GB RAM instead of 4x2GB. Slightly more expensive but leaves you room for upgrade. What's more than enough now will not be nearly enough in the future. SSD for the primary drive is an absolute must or else you'll have a kick ass top of the line rig dragged down by last century's HDD technology. Not cool, no brainer. And while you're at it, get a Corsair stand alone water cooler for the CPU, it's really cheap now.
For PSU, I'll always recommend FSP, good price and rock solid. FSP makes PSU for Corsair. Do you power calcs. Always factor in your desired GPU (OCed) x2, OCed CPU and add another 30% on top of it for degradation. Trust me, you don't wanna go cheapo on PSU because when it blows, it'll take out your MB, SSD, HDD, GPU and that's pretty much everything worthwhile. You might not be an advocate of SLI or CF but besides RAM, GPU represents the cheapest significant practical power boost in the near future. Just watch those prices tumble for 2 year old cards.
Now here's the trick, you can balance your budget by switching from Nvidia to Radeon. You'll get more power for the same price. Might as well make the whole system AMD.
You might just squeeze the budget to get an R9 295x2 (standard water cooled) Big MAYBE.!!!! Or maybe a HD7990, HD7950 or R9 290. Then add another one down the road. AMD's CPUs and MBs are harder to find when they cease production, means more expensive. GPUs are the opposite. One more thing, going Radeon means you could do hybrid CF which SLI doesn't allow. You should get the GPU with just the right amount of power for your needs now and add more down the road, hense the PSU consideration.
Everyone will need to upgrade sometime in the future. If we go cheap now, we'll end up with much more hassle and spending much more in the future. My method eliminates the headache of CPU and MB upgrade, free RAM slots, scalable RAM and GPU options. These options eliminates excess hardware with depreciated value after an upgrade which you'll need to sell off at a much lower price. Plus with these methodology, you'll never really need to overclock and stress the rig since you'll already have ample processing power anyway. But when you do wanna OC, you'll know that your rig can take that level of power band.
Hope my recommendations are helpful.